What is a CBCT scan?
A CBCT, or cone beam computed tomography scan, is a type of dental imaging that provides three-dimensional views of the teeth, jaws, and surrounding structures within the area being scanned.
This is different from traditional two-dimensional X-rays because we're able to evaluate structures from different angles rather than seeing them projected onto a flat image. This additional information can be useful for diagnosis and treatment planning when three-dimensional imaging is appropriate.
How does a CBCT scan work?
The way a CBCT scan works is that the X-ray source and detector rotate around the patient and capture a series of images from different angles. The computer then uses that information to reconstruct a three-dimensional image of the area that was scanned.
The doctor can view the scan from different directions and examine cross-sectional slices of the teeth, bone, and other structures included within the field of view.
What is a CBCT scan useful for in dentistry?
A CBCT scan is useful in dentistry for several different things. You may hear about it when we're planning procedures such as dental implant placement or evaluating the surrounding bone and anatomical structures.
It can also provide additional information about certain teeth, bone changes, impacted teeth, root canal anatomy, and other findings when traditional two-dimensional X-rays don't provide all of the information we need.
If the scan reveals an abnormal or unexpected finding, we may recommend additional evaluation or referral when appropriate.
When is a CBCT scan recommended?
The recommendation to take a CBCT is individualized. It shouldn't be done as a blanket approach for every patient or every dental situation.
In specialty practices, we may use CBCT imaging more frequently because we commonly see patients with advanced or complex treatment needs. We generally recommend it when three-dimensional information is expected to provide useful diagnostic or treatment-planning information beyond what we can obtain from traditional dental X-rays.
How has CBCT technology changed dentistry?
CBCT scans and other forms of digital imaging have changed the way we can plan certain dental procedures. When it comes to something like dental implants, three-dimensional imaging allows us to evaluate available bone and nearby anatomical structures before treatment.
We can also combine CBCT information with other digital records in certain workflows to plan treatment in greater detail. That information can help us prepare for the procedure before we begin, although the actual treatment time and outcome still depend on the individual case.
What can a CBCT show that a traditional X-ray cannot?
Traditional two-dimensional X-rays have limitations because they're flat images of structures that exist in three dimensions. Anatomical structures can overlap on the image, which can sometimes make certain details harder to evaluate.
With a CBCT scan, we have the ability to look at the area from different directions and examine cross-sectional slices. Depending on the reason for the scan, that can give us additional information for dental implant planning, evaluation of certain root canal problems, impacted teeth, bone anatomy, and other dental conditions.
What happens during a CBCT scan?
Many patients ask what's involved in a CBCT scan and what the experience is like. Fortunately, the process is generally straightforward.
Depending on the machine, you'll stand or sit while the scanner rotates around your head. The actual image acquisition usually takes a relatively short amount of time, although the exact scan time varies by machine and imaging protocol.
Afterward, the computer reconstructs the imaging data so the doctor can review the three-dimensional scan.
How much does a CBCT scan cost?
The cost of a CBCT scan varies depending on the dental practice, the field of view, the reason for the scan, and whether it's being provided as part of a larger examination or treatment-planning process.
Insurance coverage also varies. If we recommend a CBCT, our office can explain the associated fee and help you understand any available insurance benefits before the scan is taken.
Are CBCT scans safe?
CBCT scans use ionizing radiation, so we want to use them when the expected diagnostic or treatment-planning benefit justifies the exposure. Radiation dose varies depending on the machine, field of view, resolution, and imaging settings.
Modern dental CBCT systems can use relatively low radiation doses compared with many conventional medical CT examinations. We select the imaging protocol and field of view based on the information we need for the individual patient.
How much area does a CBCT scan show?
How much anatomy a CBCT shows depends on its field of view. Some scans are focused on a small area, while larger fields of view can include both jaws and additional surrounding structures.
The CBCT system that we use in our office can provide a wider field of view when that information is needed. Any structures captured within the scan should be reviewed, and if we identify an unexpected finding that requires further evaluation, we can recommend an appropriate next step.
How do you choose a dental provider for CBCT imaging?
When choosing a dental provider that uses CBCT imaging, the technology itself is only part of the picture. It's also important that the provider understands when three-dimensional imaging is appropriate and has the training to interpret and use the information for your treatment.
You can ask why the scan is being recommended, what area will be captured, how the information will affect your diagnosis or treatment plan, and what happens if an unexpected finding appears on the scan.
At Periodontics and Implant Dentistry of Tallahassee, we're proud of both our treatment philosophy and the technology that we have available for our patients.
If you’re ready to schedule an exam or would like to learn more about our services, we’d love to hear from you. Call us at (850) 909-9731 or email [email protected]. We look forward to caring for your smile.